ContentBaseline · Widely available
The content CSS property sets the content inside of an element or pseudo-element, replacing the current value. It's often used with the ::before and ::after pseudo-elements to generate cosmetic content.
Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Jul 29, 2015. Widely available since Jan 29, 2018.
Browser support
DesktopChrome
1+Supportedsince Dec 11, 2008
Current: 155Edge
12+Supportedsince Jul 29, 2015
Current: 154Firefox
1+Supportedsince Nov 9, 2004
Current: 157Safari
1+Supportedsince Jun 23, 2003
Current: 27MobileChrome Android
18+Supportedsince Jun 27, 2012
Current: 155Firefox Android
4+Supportedsince Mar 29, 2011
Current: 157Safari iOS
1+Supportedsince Jun 29, 2007
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN: content.
Feature detection
CSS · check before using
@supports (content: initial) {
/* styles that rely on content */
}
/* or in JavaScript */
if (CSS.supports("content", "initial")) {
// use it
}Documentation (MDN)
Specification
Sub-features
Support for each part of the feature (12). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| content | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| content.close-quote | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| content.element_replacement | 28 | 79 | 63 | 9 | 28 | 63 | 9 |
| content.gradient | 26 | 12 | ✕ | 7 | 26 | ✕ | 7 |
| content.no-close-quote | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| content.no-open-quote | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| content.none | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| content.normal | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| content.open-quote | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| content.url | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| <string> | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| <string>.unicode_escaped_characters | 1 | 12 | 1 | 1 | 18 | 4 | 1 |